Abstract:

The problem of air pollution caused by flowing dust was becoming more and more prominent to the ecological environment and human health. Dust suppressants had attracted wide attention in the industry owing to their efficient dust suppression performance and convenient usage. At the same time, driven by the "Double Carbon" policy, dust suppressants had been developed towards green and environmental protection. Among them, bio-based dust suppressants prepared from biomass were highly favored owing to the advantages of renewable raw materials and degradability. This paper introduced the classification of dust suppressants(wetting type dust suppressant, bonded dust suppressant, agglomeration-based dust suppressant and composite dust suppressant) and dust suppression mechanism. The status of research and application progress of bio-based dust suppressants prepared from natural biomass raw materials such as starch, cellulose, guar gum, lignin and protein were described in detail, and the main research results of bio-based dust suppressants were listed. Through the introduction and analysis of biomass raw materials, it was shown that biomass raw materials in the preparation of dust suppressants had significant advantages such as degradable, renewable resources and a wide range of sources. It is proposed that the use of natural biomass as a raw material for dust suppressants would be the main research and development direction of dust suppressants under the new environmental protection model.

Key words: dust pollution control, "Double Carbon" policy, biobased dust suppressants, biomass, biodegradable